* Remove disused macro.
* GCC doesn't seem to mind if IGNORE() is left off.
* Enumify phase codes.
* Use EXIT_* macros in all exit() calls.
* How did this even work without extern?
* Give advent.h a much-needed makeover.
* Use the chomp indicator in YAML string blocks to avoid code ugliness.
This massive patch:
* Finishes working all the vocab words into YAML structures.
* Adds vocab ID generator functions.
* Redoes the input-getting system, removing the need for GETIN(),
GETTXT(), etc.
* Changes advent<->ascii mapping to avoid the special 'shift'
character.
* Works around some bad behavior in the dragon attack logic.
* Handles the reservoir magic word without changing the database
contents.
